Flue-top or spark-catcher



Y UNITED STATES PATENT O ICE.

'EDWIN OTIS WOODRUFF, OF KNOXVILLE, IOWA.

FLUE-TOP OR SPARK-CATCHER.

SPECIPICATTON forming part of Letters Patent No. 376,498, dated January 17, 1888.

- Application filed October 21, 1887. Serial No. 252,998. (No model.)

To aZZ whom it may concern.-

Be it known that I, EDWIN OTIs WooDEUEE, a citizen of the United States, residing at Knoxville, in the county of Marion and State ofIowa, have invented certain new and useful Improvements in FlueTops or Spark-Catchers; and I do declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, and to the letters and figures of and retain the moisture which soon rusts away the side seams of the ordinary hoods. The flue portions have extensions which project up into the bonnet and prevent counter-currents of air, which is a common and very objectionable feature in flue-tops. The sheets, of various grades for different sizes of flue-tops, can be out after my pattern by the manufacturer and sold to the trade and kept by them in piles until needed, when the flue top can be quickly made up.

The improvements consist of the novel features which will be more fully hereinafter set forth and claimed, and shown in the annexed drawings, in which- Figure 1 is a plan view of my improved pattern for a flue'top; Fig. 2, a perspective View showing the flue-top partially bent into form by full and dotted lines; Fig.8, a perspective view of the flue-top completed.

In forming the pattern of my flue-top I take a piece of sheet material, A, of desired size, and makeacut, a, near its top midway between the edges of the sheet, two short cuts, b and c,

in line with and oneach side of the out a, and

a cut, d, extending approximately at right angles to the cut a, and from said out a through the top of the sheet. The cuts a, b, and a may be of any desired form without departing from the spirit of my invention, although the curved form shown has been found to give the best results, and is therefore preferred. The cut a is semicircular, whereas the cuts 12 and c are each only one-half a semi-circle or one-quarter of a circle and extended through the edges of 6c the sheet, and form with the two cuts a and d the two corresponding wings D and E. One of the sides of the sheet is extended slightly below one of the cuts, as c, for a short distance to form an overlapping edge, on, when the two edges are brought together.

In shaping the top the portion of the sheet below the cuts a b c is bent into cylindrical form, which will bring the wings D and E diametrically opposite to each other and parallel. (See full lines in Fig. 2.) After the edges of the tubular portion of the top are secured the wings D and E are curved toward each other, (see dotted lines, Fig. 2,) and their ends are overlapped and secured together. The seam formed is at the highest point, and will not retain moisture for any great length of time.

The top when completed has extensions 9 and h, diametrically opposite each other,which project up a short distance into the hood. These extensions, in connection with the hood, prevent, to avery great degree, counter-currents of air which interfere with the outward circulation of the flue.

Having thus described my invention, whatI claim, and desire to secure by Letters Patent,

1. Theherein-describedpatternforaflue-top composed of the sheet having a middle cut, a cut on each side of the middle cut, and a cut extending about at right angles to the line of the three cuts and from the middle cut through the top of the sheet, the side cuts ext-ending through the edges of the sheet, substantially as described, for the purpose specified.

2. The herein-described flue-top, composed of the sheet having a curvedcut midway between its edges and a short curved cut on each side of the middle out extending through the edge of the sheet, and the cut extending lOO from the middle out through the top of the single seani, which seam is located on top, subsheet, forming the two wings, the sheet below stantially as described, for the purpose specithe middle and side cuts being bent into tubufied.

lar form and havingit-s edges secured together, In testimony whereof I affix my signature in 5 and the wings being curved toward each other presence of two witnesses.

and secured together at their tops. EDWIN OTIS TOODRUFF.

3. A flue-top made of asingle piece of sheet material, composed of a tubular portion and \Vitnesses: a hood or bonnet, the tubular portion having XV. L. W OODRUFF, IO a single side seam, and the bonnet having a V. \V. OLELAND. 

